diff --git a/src/Oauth2/MissingAccessTokenException.php b/src/Oauth2/MissingAccessTokenException.php
new file mode 100644
index 00000000..0eb4ff0c
--- /dev/null
+++ b/src/Oauth2/MissingAccessTokenException.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace OAuth2;
+
+class MissingAccessTokenException
+{
+    
+}
diff --git a/src/Oauth2/Request.php b/src/Oauth2/Request.php
new file mode 100644
index 00000000..3b934a69
--- /dev/null
+++ b/src/Oauth2/Request.php
@@ -0,0 +1,94 @@
+<?php
+
+namespace OAuth2;
+
+use OutOfBoundsException;
+use InvalidMethodCallException;
+use InvalidArgumentException;
+
+class Request implements RequestInterface
+{
+    protected $get = array();
+    protected $post = array();
+    protected $cookies = array();
+    protected $files = array();
+    protected $server = array();
+    protected $headers = array();
+
+    public static function buildFromGlobals()
+    {
+        return new static($_GET, $_POST, $_COOKIE, $_FILES, $_SERVER);
+    }
+
+    public function __construct(array $get = array(), array $post = array(), array $cookies = array(), array $files = array(), array $server = array(), $headers = array())
+    {
+        $this->get = $get;
+        $this->post = $post;
+        $this->cookies = $cookies;
+        $this->files = $files;
+        $this->server = $server;
+
+        if (empty($headers)) {
+            $this->headers = $this->readHeaders();
+        }
+    }
+
+    public function get($index = null, $default = null)
+    {
+        return $this->getPropertyValue('get', $index, $default);
+    }
+
+    public function post($index = null, $default = null)
+    {
+        return $this->getPropertyValue('post', $index, $default);
+    }
+
+    public function file($index = null, $default = null)
+    {
+        return $this->getPropertyValue('files', $index, $default);
+    }
+
+    public function cookie($index = null, $default = null)
+    {
+        return $this->getPropertyValue('cookies', $index, $default);
+    }
+
+    public function server($index = null, $default = null)
+    {
+        return $this->getPropertyValue('server', $index, $default);
+    }
+
+    public function header($index = null, $default = null)
+    {
+        return $this->getPropertyValue('headers', $index, $default);
+    }
+
+    protected function readHeaders()
+    {
+        $headers = array();
+        foreach ($this->server() as $name => $value) {
+            if (substr($name, 0, 5) == 'HTTP_') {
+                $name = str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))));
+                $headers[$name] = $value;
+            }
+        }
+
+        return $headers;
+   }
+
+    protected function getPropertyValue($property, $index = null, $default = null)
+    {
+        if ( ! isset($this->{$property})) {
+            throw new InvalidArgumentException("Property '$property' does not exist.");
+        }
+        if (is_null($index)) {
+            return $this->{$property};
+        }
+
+        if ( ! array_key_exists($index, $this->{$property})) {
+            return $default;
+        }
+
+        return $this->{$property}[$index];
+    }
+}
diff --git a/src/Oauth2/RequestInterface.php b/src/Oauth2/RequestInterface.php
new file mode 100644
index 00000000..458711ba
--- /dev/null
+++ b/src/Oauth2/RequestInterface.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace OAuth2;
+
+interface RequestInterface
+{
+
+    public static function buildFromGlobals();
+
+    public function __construct(array $get = array(), array $post = array(), array $cookies = array(), array $files = array(), array $server = array(), $headers = array());
+
+    public function get($index = null);
+
+    public function post($index = null);
+
+    public function cookie($index = null);
+
+    public function file($index = null);
+
+    public function server($index = null);
+
+    public function header($index = null);
+
+}
diff --git a/src/Oauth2/Resource.php b/src/Oauth2/Resource.php
new file mode 100644
index 00000000..285b4cb4
--- /dev/null
+++ b/src/Oauth2/Resource.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace OAuth2;
+
+use OutOfBoundsException;
+use Storage\SessionInterface;
+use Storage\SessionScopeInterface;
+
+class Resource
+{
+    protected $accessToken = null;
+
+    protected $sessionId = null;
+
+    protected $ownerType = null;
+
+    protected $ownerId = null;
+
+    protected $sessionScopes = array();
+
+    protected $storages = array();
+
+    protected $request = null;
+
+    protected $tokenKey = 'oauth_token';
+
+    /**
+     * Sets up the Resource
+     *
+     * @param  SessionInterface  The Session Storage Object
+     * @param  SessionScopeInterface  The Session Scope Storage Object
+     * @param  RequestInterface  The Request Object
+     */
+    public function __construct(SessionInterface $session, SessionScopeInterface $session_scope, RequestInterface $request = null)
+    {
+        $this->storages['session'] = $session;
+        $this->storages['session_scope'] = $session_scope;
+
+        if (is_null($request)) {
+            $request = Request::buildFromGlobals();
+        }
+        $this->request = $request;
+    }
+
+    /**
+     * Checks if the Access Token is valid or not.
+     *
+     * @return bool
+     */
+    public function isValid()
+    {
+        $access_token = $this->determineAccessToken();
+
+        $result = $this->storages['session']->validateAccessToken($access_token);
+
+        if ( ! $result) {
+            return false;
+        }
+
+        $this->accessToken = $access_token;
+        $this->sessionId = $result['id'];
+        $this->ownerType = $result['owner_type'];
+        $this->ownerId = $result['owner_id'];
+
+        $this->sessionScopes = $this->storages['session_scope']->getScopes($this->sessionId);
+
+        return true;
+    }
+
+    /**
+     * Checks if the current session has the given scope(s).
+     *
+     * @param   array
+     */
+    public function hasScope($scopes)
+    {
+        if (is_string($scopes)) {
+            if (in_array($scopes, $this->sessionScopes)) {
+                return true;
+            }
+            return false;
+        } elseif (is_array($scopes)) {
+            foreach ($scopes as $scope) {
+                if ( ! in_array($scope, $this->sessionScopes)) {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        return false;
+    }
+
+    protected function determineAccessToken()
+    {
+        if ($header = $this->request->header('Authorization')) {
+            $access_token = trim(str_replace('Bearer', '', $header));
+        } else {
+            $method = $this->request->server('REQUEST_METHOD');
+            $access_token = $this->request->{$method}($this->tokenKey);
+        }
+
+        if (empty($access_token)) {
+            throw new MissingAccessTokenException('Access Token is Missing');
+        }
+
+        return $access_token;
+    }
+
+}
diff --git a/src/Oauth2/Resource/Database.php b/src/Oauth2/Resource/Database.php
deleted file mode 100644
index 8408df3a..00000000
--- a/src/Oauth2/Resource/Database.php
+++ /dev/null
@@ -1,59 +0,0 @@
-<?php
-
-namespace Oauth2\Resource;
-
-interface Database
-{
-    /**
-     * Validate an access token and return the session details.
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT id, owner_type, owner_id FROM oauth_sessions WHERE access_token =
-     *  $accessToken AND stage = 'granted' AND
-     *  access_token_expires > UNIX_TIMESTAMP(now())
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *     [id] => (int) The session ID
-     *     [owner_type] => (string) The session owner type
-     *     [owner_id] => (string) The session owner's ID
-     * )
-     * </code>
-     *
-     * @param  string     $accessToken The access token
-     * @return array|bool              Return an array on success or false on failure
-     */
-    public function validateAccessToken($accessToken);
-
-    /**
-     * Returns the scopes that the session is authorised with.
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT scope FROM oauth_session_scopes WHERE session_id =
-     *  $sessionId
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *      [0] => (string) A scope
-     *      [1] => (string) Another scope
-     *      ...
-     * )
-     * </code>
-     *
-     * @param  int   $sessionId The session ID
-     * @return array            A list of scopes
-     */
-    public function sessionScopes($sessionId);
-}
\ No newline at end of file
diff --git a/src/Oauth2/Resource/Server.php b/src/Oauth2/Resource/Server.php
deleted file mode 100644
index 64a29d6e..00000000
--- a/src/Oauth2/Resource/Server.php
+++ /dev/null
@@ -1,253 +0,0 @@
-<?php
-
-namespace Oauth2\Resource;
-
-class ServerException extends \Exception
-{
-
-}
-
-class ClientException extends \Exception
-{
-
-}
-
-class Server
-{
-    /**
-     * Reference to the database abstractor
-     * @var object
-     */
-    private $_db = null;
-
-    /**
-     * The access token.
-     * @access private
-     */
-    private $_accessToken = null;
-
-    /**
-     * The scopes the access token has access to.
-     * @access private
-     */
-    private $_scopes = array();
-
-    /**
-     * The type of owner of the access token.
-     * @access private
-     */
-    private $_type = null;
-
-    /**
-     * The ID of the owner of the access token.
-     * @access private
-     */
-    private $_typeId = null;
-
-    /**
-     * Server configuration
-     * @var array
-     */
-    private $_config = array(
-        'token_key' =>  'oauth_token'
-    );
-
-    /**
-     * Error codes.
-     *
-     * To provide i8ln errors just overwrite the keys
-     *
-     * @var array
-     */
-    public $errors = array(
-        'missing_access_token'  =>  'An access token was not presented with the request',
-        'invalid_access_token'  =>  'The access token is not registered with the resource server',
-        'missing_access_token_details'  =>  'The registered database abstractor did not return a valid access token details response',
-        'invalid_access_token_scopes'   =>  'The registered database abstractor did not return a valid access token scopes response',
-    );
-
-    /**
-     * Constructor
-     *
-     * @access public
-     * @return void
-     */
-    public function __construct($options = null)
-    {
-        if ($options !== null) {
-            $this->_config = array_merge($this->_config, $options);
-        }
-    }
-
-    /**
-     * Magic method to test if access token represents a particular owner type
-     * @param  string $method     The method name
-     * @param  mixed  $arguements The method arguements
-     * @return bool               If method is valid, and access token is owned by the requested party then true,
-     */
-    public function __call($method, $arguements = null)
-    {
-        if (substr($method, 0, 2) === 'is') {
-
-            if ($this->_type === strtolower(substr($method, 2))) {
-                return $this->_typeId;
-            }
-
-            return false;
-        }
-
-        trigger_error('Call to undefined function ' . $method . '()');
-    }
-
-    /**
-     * Register a database abstrator class
-     *
-     * @access public
-     * @param  object $db A class that implements OAuth2ServerDatabase
-     * @return void
-     */
-    public function registerDbAbstractor($db)
-    {
-        $this->_db = $db;
-    }
-
-    /**
-     * Init function
-     *
-     * @access public
-     * @return void
-     */
-    public function init()
-    {
-        $accessToken = null;
-
-        $_SERVER['REQUEST_METHOD'] = isset($_SERVER['REQUEST_METHOD']) ?
-                                                $_SERVER['REQUEST_METHOD'] :
-                                                null;
-
-        // Try and get the access token via an access_token or oauth_token parameter
-        switch ($_SERVER['REQUEST_METHOD'])
-        {
-            case 'POST':
-                $accessToken = isset($_POST[$this->_config['token_key']]) ?
-                                        $_POST[$this->_config['token_key']] :
-                                        null;
-                break;
-
-            default:
-            $accessToken = isset($_GET[$this->_config['token_key']]) ?
-                                        $_GET[$this->_config['token_key']] :
-                                        null;
-                break;
-        }
-
-        // Try and get an access token from the auth header
-        if (function_exists('getallheaders')) {
-
-            $headers = getallheaders();
-
-            if (isset($headers['Authorization'])) {
-
-                $rawToken = trim(str_replace('Bearer', '', $headers['Authorization']));
-
-                if ( ! empty($rawToken)) {
-                    $accessToken = $rawToken;
-                }
-            }
-        }
-
-        if ($accessToken) {
-
-            $result = $this->_dbCall('validateAccessToken', $accessToken);
-
-            if ($result === false) {
-
-                throw new ClientException($this->errors['invalid_access_token']);
-
-            } else {
-
-                if ( ! array_key_exists('id', $result) ||
-                     ! array_key_exists('owner_id', $result) ||
-                     ! array_key_exists('owner_type', $result)) {
-                    throw new ServerException($this->errors['missing_access_token_details']);
-                }
-
-                $this->_accessToken = $accessToken;
-                $this->_type = $result['owner_type'];
-                $this->_typeId = $result['owner_id'];
-
-                // Get the scopes
-                $scopes = $this->_dbCall('sessionScopes', $result['id']);
-
-                if ( ! is_array($scopes))
-                {
-                    throw new ServerException($this->errors['invalid_access_token_scopes']);
-                }
-
-                $this->_scopes = $scopes;
-            }
-
-        } else {
-
-            throw new ClientException($this->errors['missing_access_token']);
-
-        }
-    }
-
-    /**
-     * Test if the access token has a specific scope
-     *
-     * @param mixed $scopes Scope(s) to check
-     *
-     * @access public
-     * @return string|bool
-     */
-    public function hasScope($scopes)
-    {
-        if (is_string($scopes)) {
-
-            if (in_array($scopes, $this->_scopes)) {
-                return true;
-            }
-
-            return false;
-
-        } elseif (is_array($scopes)) {
-
-            foreach ($scopes as $scope) {
-
-                if ( ! in_array($scope, $this->_scopes)) {
-                    return false;
-                }
-
-            }
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Call database methods from the abstractor
-     *
-     * @return mixed The query result
-     */
-    private function _dbCall()
-    {
-        if ($this->_db === null) {
-            throw new ServerException('No registered database abstractor');
-        }
-
-        if ( ! $this->_db instanceof Database) {
-            throw new ServerException('The registered database abstractor is not an instance of Oauth2\Resource\Database');
-        }
-
-        $args = func_get_args();
-        $method = $args[0];
-        unset($args[0]);
-        $params = array_values($args);
-
-        return call_user_func_array(array($this->_db, $method), $params);
-    }
-}
\ No newline at end of file
diff --git a/src/Oauth2/Storage/ClientEndpointInterface.php b/src/Oauth2/Storage/ClientEndpointInterface.php
new file mode 100644
index 00000000..ae83eb93
--- /dev/null
+++ b/src/Oauth2/Storage/ClientEndpointInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace OAuth2\Storage;
+
+interface ClientEndpointInterface
+{
+    
+}
diff --git a/src/Oauth2/Storage/ClientInterface.php b/src/Oauth2/Storage/ClientInterface.php
new file mode 100644
index 00000000..d0d7fb7d
--- /dev/null
+++ b/src/Oauth2/Storage/ClientInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace OAuth2\Storage;
+
+interface ClientInterface
+{
+    
+}
diff --git a/src/Oauth2/Storage/ScopeInterface.php b/src/Oauth2/Storage/ScopeInterface.php
new file mode 100644
index 00000000..392ce3a1
--- /dev/null
+++ b/src/Oauth2/Storage/ScopeInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace OAuth2\Storage;
+
+interface ScopeInterface
+{
+    
+}
diff --git a/src/Oauth2/Storage/SessionInterface.php b/src/Oauth2/Storage/SessionInterface.php
new file mode 100644
index 00000000..c035cffa
--- /dev/null
+++ b/src/Oauth2/Storage/SessionInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace OAuth2\Storage;
+
+interface SessionInterface
+{
+    public function validateAccessToken($access_token);
+}
diff --git a/src/Oauth2/Storage/SessionScopeInterface.php b/src/Oauth2/Storage/SessionScopeInterface.php
new file mode 100644
index 00000000..3ea89f0d
--- /dev/null
+++ b/src/Oauth2/Storage/SessionScopeInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace OAuth2\Storage;
+
+interface SessionScopeInterface
+{
+    public function getScopes($session_id);
+}